In this internship numerically investigation is done to study the influence of steady and pulsating flow on the hydrodynamic and thermal characteristics of Newtonian fluids in two dimensional sinusoidal corrugated wall channels. Simulations are performed for fully developed flow conditions at inlet sections of the channels that have wavy wall. The governing continuity, momentum and energy equations are numerically solved using finite volume method based on SIMPLE technique. The Nusselt number is obtained for both the cases and effect of strouhal number on convective heat transfer rate is observed. Enhancement in Nusselt number for pulsating inlet flow in wavy channel over its equivalent Nusselt number for steady inlet flow is calculated.